Synonyms|163Antonyms|73|Broader|0Narrower|0Related|630
11
crazy(adjective, mad, insane, irrational, mental)
11
mad
10
insane(adjective, crazy, mad, sick, irrational)
10
psychotic(adjective, crazy, mad, insane, mental)
10
unbalanced(adjective, crazy, mad, sick, insane)
9
mental(adjective, crazy, mad, insane, irrational)
8
demented(adjective, mad, insane, irrational, frenzied)
8
deranged(adjective, insane, irrational, frenzied, distraught)
7
batty
7
bonkers
7
daft
7
nuts
6
barmy
6
loco
6
loony
6
lunatic
6
unhinged
5
crackers
5
crazed(adjective, crazy, insane, irrational, overwrought)
5
disturbed
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ChicagoSmart Define. 2016. "certifiable thesaurus" https://smartdefine.org/certifiable/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, certifiable thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/certifiable/thesaurus/synonyms>.
MLASmart Define. "certifiable thesaurus" 29 March 2016. Web. 20 September 2026. <https://smartdefine.org/certifiable/thesaurus/synonyms>